在使用創龍的omapl138核心板進行開發時,項目中將mii網絡模式改成rmii模式進行使用。
在覈心板的linux系統啓動後,通過 setenv emac-mode rmii後再saveenv ,啓動系統發現並
不能識別IP,
Starting udev
Starting Bootlog daemon: bootlogd.
ALSA: Restoring mixer settings...
Configuring network interfaces... [ 14.585527] davinci_mdio davinci_mdio.0: resetting idled controller
[ 14.592329] net eth0: attached PHY driver [SMSC LAN8710/LAN8720] (mii_bus:phy_addr=davinci_mdio-0:00, id=7c0f1)
udhcpc (v1.20.2) started
Sending discover...
[ 17.587013] PHY: davinci_mdio-0:00 - Link is Up - 100/Full
Sending discover...
Sending discover...
No lease, failing
done.
Starting Bootlog daemon: bootlogd.
ALSA: Restoring mixer settings...
Configuring network interfaces... [ 14.585527] davinci_mdio davinci_mdio.0: resetting idled controller
[ 14.592329] net eth0: attached PHY driver [SMSC LAN8710/LAN8720] (mii_bus:phy_addr=davinci_mdio-0:00, id=7c0f1)
udhcpc (v1.20.2) started
Sending discover...
[ 17.587013] PHY: davinci_mdio-0:00 - Link is Up - 100/Full
Sending discover...
Sending discover...
No lease, failing
done.
Starting portmap daemon...
Starting rpcbind daemon...rpcbind: cannot bind * on udp: Address already in use
rpcbind: cannot bind tcp: Address already in use
rpcbind: cannot create socket for udp6
rpcbind: cannot create socket for tcp6
done.
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.all.rp_filter = 1
Starting atd: OK
***********************************************************************************
root@tl:/# ifconfig
eth0 Link encap:Ethernet HWaddr 0e:01:60:03:06:71
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:33
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:162 errors:0 dropped:0 overruns:0 frame:0
TX packets:162 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:245832 (240.0 KiB) TX bytes:245832 (240.0 KiB)
即使設置了啓動的環境變量設置成rmii方式也不行。
eth0 Link encap:Ethernet HWaddr 0e:01:60:03:06:71
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:33
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:162 errors:0 dropped:0 overruns:0 frame:0
TX packets:162 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:245832 (240.0 KiB) TX bytes:245832 (240.0 KiB)
即使設置了啓動的環境變量設置成rmii方式也不行。
最後通過nand erase 0 0x20000擦除環境變量存儲區域後,再重新設置網卡方式爲rmii
setenv emac-mode rmii 後saveenv
再重新上電啓動後,可以正常識別IP地址。